Potosi, Bolivia, cob 8 reales, Philip III, assayer not visible, Grade 3. KM-10. 15.78 grams. Somewhat thin from corrosion but still with bold full shield and cross, silvery with toning in crevices. With original Fisher tag and photo-certificate 3633 from 1982. From: Santa Margarita, sunk in 1622 west of Key West, Florida
($300-450)